Worm gear

Details Worm gear Worm gear

1987-10-08

1988-12-13

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 2524

Patent

active

047902035

ABSTRACT:
In a worm gear comprised of a nut and a threaded spindle, the groove bottoms of the threads are provided with a central support projection, and a radially deeper region is provided adjacent the projection on both sides thereof. When radial forces act in the same direction at both ends of the worm gear, the projection serves as a radial support projection with sufficient axial play. By providing convexly curved thread flank surfaces, for example on the nut, the threads run under the same conditions also when the axes of the nut and spindle are inclinded to one another as a result of the application thereto of inclined forces. As a consequence, axial play is reduced. Clamping of the threads is avoided in this case, however, since the support projection hinders a wedging action between the threads of the worm gear.

REFERENCES:
patent: 4679458 (1987-07-01), Brandenstein et al.

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